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"Rock Its" Build Thread

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  • #16
    Re: "Rock Its" Build Thread

    Originally posted by gowa View Post
    Dave,
    What do you do with the speakers you build? You are certainly a great builder.
    Thanks for the complement. So far I haven't run out of places to put them. The Mini's and center channel are in my living room along with the four walnut surrounds. My Continuum's are in my listening room mainly because I have it well dampened and that's were I go for my evening softer music listening. The Metallica's are suppose to be at my wives office, but they haven't left my listening room yet. My daughter has the nightmares in her room. They will follow her were ever she goes. Just because dad built them. The Rock Its may never leave my listening room unless the Continuums kick there but ts to badly. Then they will go up to my Master bedroom and I will probably build a sub for the Continuums.
    I have a set of Bose outside speakers, so there could be my next replacement.
    My brother in law is into Harley's and is building a bar in his basement. So I will probably build him a set of Harley speakers soon. So as you can see I haven't even thought about it yet and I still have places.

    Funny you ask that when I started the Rock Its build my wife said " Were are you going to put those". I just looked at her with a dumb look and said " I didn't know I need a place to put them". Then smiled.
    She just gave me $200 dollars cash for fathers day. Only because PE doesn't have gift cards.

    Oh my listening room while eventually be a finished rec room with a bar. So I will probably need speakers for there.
    Oh yeah don't forget my upper deck. Got nothing out there.
    Oh Oh my garage. Still listening to a boom box.

    Dave
    http://www.pellegreneacoustics.com/

    Trench Seam Method for MDF
    https://picasaweb.google.com/101632266659473725850

    Comment


    • #17
      Re: "Rock Its" Build Thread

      Got the mid/ tweeter boxes built and covered. Test fit the inner boxes and the drivers. So far so good. As long as I can get the top of the enclosure to fit with the outer baffle and line up to all the drivers. I think I might cut the baffle, put it on first then build the outer tweeter/ mid cabinet to it.
      Dave



      http://www.pellegreneacoustics.com/

      Trench Seam Method for MDF
      https://picasaweb.google.com/101632266659473725850

      Comment


      • #18
        Re: "Rock Its" Build Thread

        I made up a sample piece with the tweeter mounted to the rear of the baffle. I guess it would be a wave guide set up?

        I took measurements with it mounted behind the baffle and again surface mounted.

        Here is the set up surface mounted. Measuring from 1M.



        Here is how I rear mounted the tweeter.



        Hard to tell in the pic but I was able to taper it out about 3".




        Here is my measurements. The left one is surface mounted, the right one is rear mounted and the bottom is PE's graph. Should I assume the rear mount is actually better then surface mounting?
        Dave

        http://www.pellegreneacoustics.com/

        Trench Seam Method for MDF
        https://picasaweb.google.com/101632266659473725850

        Comment


        • #19
          Re: "Rock Its" Build Thread

          The rear-mount is definitely smoother and with lower extension, but I still wouldn't use it below 2.5kHz in either form.

          I say if you can do it- go for the rear-mount.
          Later,
          Wolf
          "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
          "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
          "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
          "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

          *InDIYana event website*

          Photobucket pages:
          http://photobucket.com/Wolf-Speakers_and_more

          My blog/writeups/thoughts here at PE:
          http://techtalk.parts-express.com/blog.php?u=4102

          Comment


          • #20
            Re: "Rock Its" Build Thread

            Everything is looking great, thanks for all the updates.

            But why are you using Steps for FR measurements? You should be using ARTA ... also try downloading HolmImpulse, it's free and I'm quickly starting to like it more than the Arta suite.
            Vapor Audio

            Comment


            • #21
              Re: "Rock Its" Build Thread

              I tried ARTA first, but was getting about a 15dB down hill slope from about 5kHz on up. I tried close mic of about an inch and moved back to 1M and I got the same results. These were taken inside. Not sure what I may have been doing wrong.
              Dave
              http://www.pellegreneacoustics.com/

              Trench Seam Method for MDF
              https://picasaweb.google.com/101632266659473725850

              Comment


              • #22
                Re: "Rock Its" Build Thread

                If you didn't use the cal-file or your preamp/SC rolls off- that could be the culprit.
                Later,
                Wolf
                "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
                "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
                "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
                "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

                *InDIYana event website*

                Photobucket pages:
                http://photobucket.com/Wolf-Speakers_and_more

                My blog/writeups/thoughts here at PE:
                http://techtalk.parts-express.com/blog.php?u=4102

                Comment


                • #23
                  Re: "Rock Its" Build Thread

                  If that were the case wouldn't it do it also in Steps? I will look into it though. I was planning on using ARTA once I got all the drivers in the cabinets.
                  Thanks Dave
                  http://www.pellegreneacoustics.com/

                  Trench Seam Method for MDF
                  https://picasaweb.google.com/101632266659473725850

                  Comment


                  • #24
                    Re: "Rock Its" Build Thread

                    Originally posted by davepellegrene View Post
                    I tried ARTA first, but was getting about a 15dB down hill slope from about 5kHz on up. I tried close mic of about an inch and moved back to 1M and I got the same results. These were taken inside. Not sure what I may have been doing wrong.
                    Dave
                    Check your audio card setup in ARTA, and make sure you're using the correct input channel in the ARTA setup. A mic calibration file won't make near that kind of difference.
                    Vapor Audio

                    Comment


                    • #25
                      Re: "Rock Its" Build Thread

                      It shows that I have the mic calibration file set up. I am using my laptop audio card . It is from Sigma Tel Audio. I have every screen shot that shows a channel setting showing left channel. I have looked through the sound card and through ARTA settings. I can't seem to find anything that looks like it could cause this to happen. A while back someone had said that if I use the laptop sound card that it may have built in equilzation. Not sure if it would cause the top end to roll off like that though. If so I can't find any settings for that. Any other ideas on what to try?

                      Isn't there a test that I can do that will show if my measuring system is working properly? Thought I read about a feed back loop or something like that.
                      Dave
                      http://www.pellegreneacoustics.com/

                      Trench Seam Method for MDF
                      https://picasaweb.google.com/101632266659473725850

                      Comment


                      • #26
                        Re: "Rock Its" Build Thread

                        More progress. Mid/ tweeter sides made up. One set installed. Stainless pieces cut and glued on. Ran one piece short. Hope I can buy some. Got the top pieces cut to set into the sides and front baffle. Need to shape those yet then install.
                        Dave



                        http://www.pellegreneacoustics.com/

                        Trench Seam Method for MDF
                        https://picasaweb.google.com/101632266659473725850

                        Comment


                        • #27
                          Re: "Rock Its" Build Thread

                          Trying for Dayton, Dave?
                          Wolf
                          "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
                          "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
                          "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
                          "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

                          *InDIYana event website*

                          Photobucket pages:
                          http://photobucket.com/Wolf-Speakers_and_more

                          My blog/writeups/thoughts here at PE:
                          http://techtalk.parts-express.com/blog.php?u=4102

                          Comment


                          • #28
                            Re: "Rock Its" Build Thread

                            Originally posted by Wolf View Post
                            Trying for Dayton, Dave?
                            Wolf
                            Hmm, 12 days. Don't think that's going to happen. I should have the cabinets done but I am sure I won't have the crossovers or finishing done.
                            My water ski tournaments start in a couple of weeks and I haven't hit the jump yet this year. I need to get rolling on that.

                            We have every weekeng from the 4th all the way through august booked up, so I will probably be all summer finishing these up. Once I get the boxes done I will probably spend quite a bit of time listening and tweaking. Mainly for the learning process. That is one reason I spent so much time making these so assessable. I should be able to get to everything very easily.
                            Dave
                            http://www.pellegreneacoustics.com/

                            Trench Seam Method for MDF
                            https://picasaweb.google.com/101632266659473725850

                            Comment


                            • #29
                              Re: "Rock Its" Build Thread

                              Yeah- coming on fast. You'll be missed at MWAF then....
                              Wolf
                              "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
                              "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
                              "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
                              "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

                              *InDIYana event website*

                              Photobucket pages:
                              http://photobucket.com/Wolf-Speakers_and_more

                              My blog/writeups/thoughts here at PE:
                              http://techtalk.parts-express.com/blog.php?u=4102

                              Comment


                              • #30
                                Re: "Rock Its" Build Thread

                                Wow Dave,

                                How do you do it? You do difficult, multiple angled cuts, keep your workshop organized and clean, and you're fast! I really need to see my therapist. Sometimes it takes me a whole week just to obssess about how and where to drill holes for the screws.

                                BTW, might there be an issue with wood movement? Perhaps I missed this in this or your design thread.

                                Great work!

                                Darren

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